鄂西地区裸藻的初步研究

A PRELIMINARY STUDY ON EUGLENOPHYTA FROM WESTERN HUBEI

在鄂西的五峰、宜都、宜昌、当阳及神农架林区一带,采集到裸藻门植物16属140种(包括变种和变型)。属于绿色裸藻类的有116种,无色裸藻类的有24种,其中有5个新种,7个新变种,3个新变型,有20种是我国新记录。在采集区域内的地形大体上可以分成三种不同的类型,即:山岳地区(采得裸藻5种),河谷盆地地区(采得裸藻40种)和沿长江丘陵地区(采得裸藻128种)。静止水体由于地形的差异,体积的大小和水质的肥沃程度不同,都对裸藻门植物的生长有重要的影响。

The present investigation deals with the Euglenophyta as presented in collections from different localities of Western Hubei, China. Altogether, 140 taxa belonging to 16 genera have been noted. Among them, 116 taxa belong to green euglenoids and only 24 taxa to colourless euglenoids; 5 species, 7 varieties and 3 forms are described as new to science, and 20 taxa are new records of China.Concerning the topographical conditions of the working area, three categories can be divided, i.e.: mountainous districts (only 5 taxa of euglenoid noted in these localities), basins of river valley (40 taxa collected) and hilly lands along Yangtze River (128 taxa discovered). Topographical conditions of these districts affect both size and number of the small standing water bodies, as well as the fertility of water. These are undoubtedly important factors influencing the production and distribution of the Euglenophyta.